Cuicunque aliquis quid concedit concedere videtur et id, sine quo res ipsa esse non potuit

Dictionary: 
Ballentine's Law Dictionary

One who grants something to another is held to grant also that without which the thing is worthless.

Author: 
James A. Ballentine
Publisher: 
The Bobbs-Merrill Company
Year Published: 
1916
Genre: 
Law Dictionary